Radio Resource Management in CDMA-based Cognitive and Cooperative Networks

In this thesis we study radio resource management (RRM) in two types of CDMAbased wireless networks, cognitive radio networks (CRNs) and cooperative communication networks. In the networks, all simultaneous transmissions share the same spectrum and interfere with one another. Therefore, managing the transmission power is very important as it determines other aspects of the network resource allocations, such as transmission time and rate allocations. The main objective of the RRM is to efficiently utilize the available network resources for providing the mobile users with satisfactory quality of service (QoS). In Chapters 2-4, we study the resource management in a CDMA-based ad hoc CRN with spectrum underlay, where the CRN shares the same spectrum with the uplink of a cellular CDMA network, which is the primary network. We first jointly consider the resource allocations in both the primary and the secondary networks, and study the optimum transmission power and rate allocations for supporting best effort traffic in the CRN. Fair transmission throughput is provided to the secondary links at each time slot. We then study how to support long-term best effort traffic in the CRN, and provide proportional fairness to the average throughput among links. An optimum scheduling problem is formulated and solved, and two heuristic